mark cuban
Losing your job might be one of the toughest experiences you encounter, but it isn't always the worst thing that can happen to your career.  Mark Cuban was destined to become more than a salesman at a computer store, and J.K. Rowling wasn't passionate about her job as a secretary.
But termination papers enabled these people to explore their real callings in life.
Even Mayor Bloomberg got his chance when his position with Salomon Brothers ended.
Here are 17 people who got kicked to the curb and turned it into an opportunity.